package com.wen.gulimall.product.service.impl;

import com.wen.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.wen.gulimall.product.dao.AttrDao;
import com.wen.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.wen.gulimall.product.entity.AttrEntity;
import com.wen.gulimall.product.service.AttrAttrgroupRelationService;
import com.wen.gulimall.product.service.AttrService;
import com.wen.gulimall.product.vo.AttrGroupWithAttrsVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.wen.common.utils.PageUtils;
import com.wen.common.utils.Query;

import com.wen.gulimall.product.dao.AttrGroupDao;
import com.wen.gulimall.product.entity.AttrGroupEntity;
import com.wen.gulimall.product.service.AttrGroupService;
import org.springframework.util.StringUtils;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {
    @Autowired
    private AttrAttrgroupRelationDao relationDao;
    @Autowired
    private AttrService attrService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                new QueryWrapper<AttrGroupEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params, Integer catelogId) {
        QueryWrapper<AttrGroupEntity> queryWrapper = new QueryWrapper<>();
        if (catelogId != 0) {
            queryWrapper.eq("catelog_id", catelogId);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            queryWrapper.and((item) -> {
                item.like("attr_group_id", key).or().like("attr_group_name", key);
            });
        }
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                queryWrapper
        );
        return new PageUtils(page);

    }

    /**
     * 根据分类id查出所有的分组以及这些组里面的属性
     *
     * @param catelogId
     * @return
     */
    @Override
    public List<AttrGroupWithAttrsVo> getAttrGroupWithAttrsByCatelogId(Long catelogId) {
        //1、查询分组信息
        List<AttrGroupEntity> attrGroupEntities = this.list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        //2、查询所有属性
        List<AttrGroupWithAttrsVo> attrsVoList = attrGroupEntities.stream().map(item -> {
            AttrGroupWithAttrsVo attrGroupWithAttrsVo = new AttrGroupWithAttrsVo();
            BeanUtils.copyProperties(item, attrGroupWithAttrsVo);

            List<AttrEntity> attrEntityList = attrService.getRelationAttr(attrGroupWithAttrsVo.getAttrGroupId());
            attrGroupWithAttrsVo.setAttrs(attrEntityList);

            return attrGroupWithAttrsVo;
        }).collect(Collectors.toList());


        return attrsVoList;
    }

}